Greetings! Have you noticed how 99% of multiplayer games are locked to one platform? i.e., iOS players can only play against other iOS players, same with android. I am currently developing a REALTIME multiplayer game that can be played cross-platform. The game will not use game-center, but rather a 3rd party server. Right now, I am working on the friending/invite system for the game. What I have not decided is what the actual game will be. I Need Ideas! criteria: the game will be 2d If you come up with a great idea, you will be featured in the credits and more! Thanks for your time.